/*
 * Copyright @ 2018 - present 8x8, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jitsi.nlj.rtp.codec

import org.jitsi.nlj.MediaSourceDesc
import org.jitsi.nlj.PacketInfo
import org.jitsi.nlj.RtpEncodingDesc
import org.jitsi.nlj.rtp.VideoRtpPacket

/**
 * Abstract interface to the codec-specific parsing of a video source.
 *
 * Typically this will set layer information as interpreted from received packets,
 * and verify stream consistency.
 */
abstract class VideoCodecParser(
    var source: MediaSourceDesc
) {
    abstract fun parse(packetInfo: PacketInfo)

    protected fun findRtpEncodingDesc(packet: VideoRtpPacket): RtpEncodingDesc? {
        source.findRtpEncodingDesc(packet.ssrc)?.let {
            return it
        }
        return null
    }

    protected fun findRtpLayerDescs(packet: VideoRtpPacket) = source.findRtpLayerDescs(packet)
}
